1/*
2 * strcmp test.
3 *
4 * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
5 * See https://llvm.org/LICENSE.txt for license information.
6 * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
7 */
8
9#include <stdint.h>
10#include <stdio.h>
11#include <stdlib.h>
12#include <string.h>
13#include "stringlib.h"
14
15static const struct fun
16{
17 const char *name;
18 int (*fun)(const char *s1, const char *s2);
19} funtab[] = {
20#define F(x) {#x, x},
21F(strcmp)
22#if __aarch64__
23F(__strcmp_aarch64)
24# if __ARM_FEATURE_SVE
25F(__strcmp_aarch64_sve)
26# endif
27#elif __arm__
28# if __ARM_ARCH >= 7 && __ARM_ARCH_ISA_ARM >= 1
29F(__strcmp_arm)
30# elif __ARM_ARCH == 6 && __ARM_ARCH_6M__ >= 1
31F(__strcmp_armv6m)
32# endif
33#endif
34#undef F
35 {0, 0}
36};
37
38static int test_status;
39#define ERR(...) (test_status=1, printf(__VA_ARGS__))
40
41#define A 32
42#define LEN 250000
43static char s1buf[LEN+2*A];
44static char s2buf[LEN+2*A];
45
46static void *alignup(void *p)
47{
48 return (void*)(((uintptr_t)p + A-1) & -A);
49}
50
51static void test(const struct fun *fun, int s1align, int s2align, int len, int diffpos)
52{
53 char *src1 = alignup(p: s1buf);
54 char *src2 = alignup(p: s2buf);
55 char *s1 = src1 + s1align;
56 char *s2 = src2 + s2align;
57 int r;
58
59 if (len > LEN || s1align >= A || s2align >= A)
60 abort();
61 if (diffpos > 1 && diffpos >= len-1)
62 abort();
63
64 for (int i = 0; i < len+A; i++)
65 src1[i] = src2[i] = '?';
66 for (int i = 0; i < len-1; i++)
67 s1[i] = s2[i] = 'a' + i%23;
68 if (diffpos > 1)
69 s1[diffpos]++;
70 s1[len] = s2[len] = '\0';
71
72 r = fun->fun(s1, s2);
73
74 if (((diffpos <= 1) && r != 0) || (diffpos > 1 && r == 0)) {
75 ERR("%s(align %d, align %d, %d) failed, returned %d\n",
76 fun->name, s1align, s2align, len, r);
77 ERR("src1: %.*s\n", s1align+len+1, src1);
78 ERR("src2: %.*s\n", s2align+len+1, src2);
79 }
80}
81
82int main()
83{
84 int r = 0;
85 for (int i=0; funtab[i].name; i++) {
86 test_status = 0;
87 for (int d = 0; d < A; d++)
88 for (int s = 0; s < A; s++) {
89 int n;
90 for (n = 0; n < 100; n++) {
91 test(fun: funtab+i, s1align: d, s2align: s, len: n, diffpos: 0);
92 test(fun: funtab+i, s1align: d, s2align: s, len: n, diffpos: n / 2);
93 }
94 for (; n < LEN; n *= 2) {
95 test(fun: funtab+i, s1align: d, s2align: s, len: n, diffpos: 0);
96 test(fun: funtab+i, s1align: d, s2align: s, len: n, diffpos: n / 2);
97 }
98 }
99 printf(format: "%s %s\n", test_status ? "FAIL" : "PASS", funtab[i].name);
100 if (test_status)
101 r = -1;
102 }
103 return r;
104}
105

source code of libc/AOR_v20.02/string/test/strcmp.c